2013 polling from Pew suggests little opposition to IVF:
In vitro fertilization is:
Wrong: 12%
Not a moral issue: 46%
Morally Acceptable: 33%
Interestingly, Protestants and Catholics are tied in their (slight) opposition to IVF - 13% each. White evangelicals oppose by about the same amount - 14%. College grads oppose at 7%, while High School or less oppose at 16%. There appear to be a lot of respondents that are fine with IVF, but think abortion is morally wrong. 49% - 12% = 37%.